<template>
  <div class="login">
    <div class="container">
      <el-form
        :model="userForm"
        :rules="rules"
        ref="userForm"
        class="demo-ruleForm"
      >
        <img src="../assets/avatar.jpg" class="avatar" alt="">
        <el-form-item prop="username">
          <el-input
            v-model="userForm.username"
            prefix-icon='myicon myicon-user'
            placeholder='用户名'
          ></el-input>
        </el-form-item>
        <el-form-item prop="password">
          <el-input type="password"
            v-model="userForm.password"
            prefix-icon='myicon myicon-key'
            placeholder='密码'
          ></el-input>
        </el-form-item>
        <el-button type="primary" class="login-btn" @click="login('userForm')">登录</el-button>
      </el-form>
    </div>
  </div>
</template>
<script>
// 引入index.js文件
import {login} from '@/api/index.js'

export default {
  data () {
    return {
      userForm: {
        username: '',
        password: ''
      },
      rules: {
        username: [
          { required: true, message: '用户名', trigger: 'blur' }
        ],
        password: [
          { required: true, message: '密码', trigger: 'blur' }
        ]
      }
    }
  },
  methods: {
    // 点击按钮实现页面数据提交跳转
    login (formInfo) {
      // 验证用户信息是否合格
      this.$refs[formInfo].validate((valid) => {
        if (valid) { // 为true 则继续往下执行
          // 调用api的index.js文件里面的login
          login(this.userForm).then((result) => {
            // 判断请求数据是否成功
            if (result.meta.status === 200) {
              // 将服务器给浏览器的token存到本地存储
              localStorage.setItem('itcast_token', result.data.token)
              // 编程式导航  页面跳转
              this.$router.push({name: 'Home'})
            } else {
              // 给出提示
              this.$message.error(result.meta.msg)
            }
          })
        } else {
          // 给出提示  用户名或密码不完整
          this.$message.error('用户名或密码不完整')
          // 结束继续执行
          return false
        }
      })
    }
  }
}

</script>
<style lang="scss" scoped>
.login {
  position: fixed;
  width: 100%;
  height: 100%;
  background-color: #2f4050;

  .container {
    position: absolute;
    left: 0;
    right: 0;
    width: 400px;
    padding: 0px 40px 15px 40px;
    margin: 200px auto;
    background: white;
    .avatar {
      position: relative;
      left: 50%;
      width: 120px;
      height: 120px;
      margin-left: -60px;
      margin-top: -60px;
      box-sizing: border-box;
      border-radius: 50%;
      border: 10px solid #fff;
      box-shadow: 0 1px 5px #ccc;
      overflow: hidden;
    }
    .login-btn {
      width: 100%;
    }
  }
}
</style>
